POV-Ray : Documentation : No_Image, No_Reflection
  POV-Ray 3.6 Documentation Online View No_Shadow Double_Illuminate No_Image, No_Reflection



These two keywords are very similar in usage and function to the no_shadow keyword, and control an object's visibility.
You can use any combination of the three with your object.

When no_image is used, the object will not be seen by the camera, either directly or through transparent/refractive objects. However, it will still cast shadows, and show up in reflections (unless no_reflection and/or no_shadow is used also).

When no_reflection is used, the object will not show up in reflections. It will be seen by the camera (and through transparent/refractive objects) and cast shadows, unless no_image and/or no_shadow is used.

Using these three keywords you can produce interesting effects like a sphere casting a rectangular shadow, a cube that shows up as a cone in mirrors, etc. No_Shadow Double_Illuminate

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